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ZN39 Indoor Vacuum Circuit Breaker

1.Rated Voltage:12kV
2.Ambient temperature: -40°C~+40°C (below 35°C within 24 hours)
3.Relative humidity: ≤95% (daily average) or ≤90% (monthly average)
4.Altitude: ≤ 1000m
  • Fast Delievery
  • Quality Assurance
  • 24/7 Customer Service

Product Introduction

1.ZN39 Indoor Vacuum Circuit Breaker: Reliable Power Protection for Modern Electrical Systems

Looking for a robust solution to safeguard your electrical infrastructure? The ZN39 Indoor Vacuum Circuit Breaker offers cutting-edge technology to ensure uninterrupted power distribution. Designed for demanding environments, this circuit breaker combines durability, precision, and adaptability—ideal for industries like power grids, industrial plants, and urban infrastructure. With certifications like IEC 62271-100 and CE, it meets global standards while excelling in seismic resistance, humidity control, and rapid interruption (≤15ms). Let’s explore how the product can elevate your operations.

ZN39 Indoor Vacuum Circuit Breaker

2.Technical Specifications

  • Rated Voltage: 12kV
  • Ambient Temperature: -40°C to +40°C
  • Relative Humidity: ≤95% (daily) / ≤90% (monthly)
  • Altitude: ≤1000m
  • Mechanical Operations: ≥20,000 cycles
  • Breaking Time: ≤15ms
project unit Electrical parameters
Rated voltage kV 12
Rated insulation level Rated lightning impulse withstand voltage (peak) kV 75
Power frequency withstand voltage (1min) 42
Rated short-circuit breaking current kA 20/25 31.5 40
Rated current A 630、1250 630、1250、1600、2000、2500、3150 1250、1600、2000、2500、3150
Rated thermal stable current (effective value) kA 20/25 31.5 40
Rated dynamic and stable current (peak) 63 80 100
Rated short-circuit closing current (peak) 63 80 100
Breaking times of rated short-circuit breaking current times 50
Power frequency withstand voltage of secondary circuit (1min) V 2000
Rated operating sequence   O-0.3-CO-180S-CO
O-180S-CO-180S-CO
Rated thermal stabilization time s 4
Rated single / back-to-back capacitor bank breaking current A 630/400 800/400(40kA)
Mechanical life times  10000

3.Key Features & Advantages

1. Modular Spring-Operated Mechanism: Simplifies maintenance and reduces downtime with easy component replacement.

2. Seismic & Anti-Fouling Design: Reinforced brackets and high-creepage porcelain sleeves ensure stability in earthquake-prone or polluted environments.

3. Smart Compatibility: IoT-ready models (ZN39-S series) enable real-time condition monitoring.

4. Custom Configurations: Tailor terminal layouts, communication interfaces, and voltage ratings to regional needs.

4.Applications Across Industries

Be used in a wide range of industries.

 

Industrial Plants

Industrial Plants

Eliminate power factor penalties in CNC machines and assembly lines while handling surge currents up to 100x rated capacity.

Solar/Wind Farms

Substation

Stabilizes substation voltage against harmonics and intermittent generation from renewable inverters.

Commercial Buildings

Commercial Buildings

Retrofit aging systems in hospitals or malls with silent (<45dB), flame-retardant capacitors that meet NFPA 70 fire codes.

 

5.Built to Last: Manufacturing & Quality Control

Our ISO-certified facilities combine precision engineering with rigorous testing:

  • Material Selection: Aerospace-grade alloys for contacts and insulation.
  • Automated Assembly: Minimizes human error for consistent quality.
  • Triple-Stage Testing: Simulates 20+ years of operation to validate durability.

6.Why Choose Us?

  • Proven Expertise: Contributors to the National 863 Program with 15+ patents in switchgear tech.
  • Global Compliance: Pre-certified units for faster market entry.
  • Bulk Order Flexibility: Competitive pricing for 5,000+ unit orders and JIT delivery in <8 weeks.
  • Lifetime Support: Multilingual manuals, CAD files, and 24/7 technical assistance.

7.Partner With Confidence

Trusted by distributors in 30+ countries, our product delivers unmatched ROI through reduced downtime and compliance-ready designs. Whether you’re serving price-sensitive emerging markets or tech-driven regions, our ZN39-E (Economy) and ZN39-S (Smart) series cater to every need.

Certificate

Certificate

Certificate

8.FAQs

1. What certifications does the ZN39 have?

It meets IEC standards.

2. Can it handle seismic zones?

Yes—its reinforced structure is tested for 8+ magnitude earthquakes.

3. What’s the lead time for bulk orders?

Standard orders ship in 6–8 weeks; expedited options available.

4. Is customization possible?

Absolutely! Adjust voltage ratings, communication protocols, or terminal types.

9.Contact Us

Email: xaxd_electric@163.com

Let’s discuss how the ZN39 Indoor Vacuum Circuit Breaker can meet your clients’ demands for reliability and value.

10.Factory Show

Factory

Factory

11.Equipment Display

Equipment

12.Application Cases

State Grid systems, power engineering, steel and metallurgy, petrochemicals, rail transportation, energy and water conservancy, construction, environmental protection, and renewable energy sectors

Shanxi Yongchang Group Coal Chemical Project: 10kV Switchgear
Shanxi Yongchang Group Coal Chemical Project: 10kV Switchgear
Gansu Jinhui Mining Project: 40.5kV Switchgear
Gansu Jinhui Mining Project: 40.5kV Switchgear
AVIC Turkey Project: 10kV Reactive Power Compensation Capacitor Bank
AVIC Turkey Project: 10kV Reactive Power Compensation Capacitor Bank
Sekong Coal Mine (Phonesack Group), Laos: Capacitor Banks & Transformers for 22kV Line Compensation
Sekong Coal Mine (Phonesack Group), Laos: Capacitor Banks & Transformers for 22kV Line Compensation
Heilongjiang Project: Capacitor Banks (Tower-Type)
Heilongjiang Project: Capacitor Banks (Tower-Type)
Xinjiang Project: Capacitor Banks (Tower-Type)
Xinjiang Project: Capacitor Banks (Tower-Type)

13.Team and Exhibition

Team and Exhibition

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